/Engine/Source/Editor/UnrealEd/Public/PackageHelperFunctions.h
Add and remove assets for the specified Tag or Connection. Assets from InAddList are added; assets from InRemoveList are removed.
template<class AssetSetPolicy> bool UpdateSetContent ( [FName](API\Runtime\Core\UObject\FName) InSetName, [ECollectionShareType::Type](API\Developer\CollectionManager\ECollectionShareType\Type) InType, const [TArray](API\Runtime\Core\Containers\TArray)< [FSoftObjectPath](API\Runtime\CoreUObject\UObject\FSoftObjectPath) > & InAddList, const [TArray](API\Runtime\Core\Containers\TArray)< [FSoftObjectPath](API\Runtime\CoreUObject\UObject\FSoftObjectPath) > & InRemoveList )